NTSTATUS __stdcall VfZwUnloadDriver(UNICODE_STRING *DriverServiceName){
PVOID retaddr;
if( (unsigned int)ViZwShouldCheck() )
ViZwCheckUnicodeString(DriverServiceName, retaddr);
return((__int64(__fastcall *)(UNICODE_STRING *))pXdvZwUnloadDriver)(DriverServiceName);
}